Description
Factory Mercedes S Class S280 S320 Workshop Manual (1999–2005)
This official factory workshop manual covers the W220-chassis Mercedes S Class S280 and S320 — the brand’s flagship luxury sedan sold in the US market from 1999 through 2005 — delivering complete mechanical and electrical repair procedures to dealership standards.
Powertrain & Drive Coverage
| Component | Variants Covered |
|---|---|
| Petrol | M112 2.8L V6 (S280, ~204 hp); M112 3.2L V6 (S320, ~224 hp) |
| Diesel | N/A |
| Transmissions | 722.6 5-speed automatic |
| Drive | RWD |
| Model Years | 1999–2005 |
| Badge Twins | N/A |
Common S Class Repairs Covered
| System | Procedures |
|---|---|
| Airmatic Suspension | Air strut replacement, compressor diagnostics, ride-height sensor calibration |
| SAM Unit / Electrical | Signal Acquisition Module fault diagnosis, CAN-bus wiring checks, connector pinout reference |
| M112 Timing Chain | Timing chain tensioner inspection and replacement, guide rail service, torque specs |
| Brake System | Front and rear brake pad/rotor replacement, SBC brake system bleeding, ABS diagnostics |
Format & Delivery
PDF. Instant download; lifetime re-downloads.
Frequently Asked Questions
What chassis does this manual cover?
This manual covers the W220 chassis, which underpins the S Class produced from 1999 to 2005. Both standard wheelbase and long wheelbase (S320 L) body configurations are included, along with pre-facelift and post-2002 facelift variants.
Which engine codes are documented?
The M112 engine family is covered in both displacements — the 2.8L (M112.922) in the S280 and the 3.2L (M112.944) in the S320. Both use three-valve-per-cylinder heads with twin-spark ignition. Full timing, torque, and fluid specifications are provided.
Are the Airmatic suspension procedures included?
Yes. The W220’s air suspension system is thoroughly documented, covering compressor removal, air strut service, ride-height sensor adjustment, and fault-code diagnostics — all common maintenance items on these vehicles.
What format is the manual?
The manual is delivered as a PDF file. After purchase you receive an instant download link, and the file can be accessed on any Windows, Mac, tablet, or smartphone. You may print individual pages for shop use, and re-downloads are available for life.
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